The 18-year-old emerged as one of Europe's top players last season, scoring 26 goals in 44 matches in all competitions as Monaco beat big-spending Paris Saint Germain to the French title and reached the UEFA Champions League semi-finals.

Mbappe's rise has seen him linked with world record moves to PSG, Real Madrid and Europe's other big spenders.

But Monaco have released a statement accusing some clubs of illegally approaching the youngster.

"AS Monaco regretfully notice that important European football clubs made contacts with Kylian Mbappé (and his entourage) without its authorization," Monaco said in the statement on their website on Thursday.

"AS Monaco want to remind to these clubs that such actions are contrary to the article 211 of the Administrative regulation of the French Football League (Ligue de Football Professionnel) and to the article 18.3 of the Regulation of the Status and the Transfer of the Players of FIFA.

"To put an end to this unacceptable situation, AS Monaco consider asking the French Football League (Ligue de Football Professionnel) and the FIFA to commit disciplinary procedures against clubs offenders."